National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

A Few Clouds

26°F

-3°C

Humidity 44%
Wind Speed NW 15 G 28 mph
Barometer 30.12 in (1020.0 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 23 Jan 8:56 pm EST
Extended Forecast for

South Dennis MA

Cold Weather Advisory January 23, 10:00pm until January 24, 10:00am
Winter Storm Warning January 25, 07:00am until January 26, 08:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning

  • Tonight

    Tonight: Partly cloudy, with a low around 7. Wind chill values as low as -7. Northwest wind around 14 mph, with gusts as high as 30 mph.

    Low: 7 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 17. Wind chill values as low as -9. Northwest wind 8 to 13 mph, with gusts as high as 28 mph.

    High: 17 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 12. Northwest wind around 6 mph.

    Low: 12 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow, mainly after 11am. The snow could be heavy at times. High near 32. North wind 5 to 8 mph becoming east in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 32 °F

    Snow Likely
    then Heavy
    Snow

  • Sunday Night

    Sunday Night: Snow before 2am, then rain and sleet between 2am and 3am, then rain, snow, and sleet after 3am. The snow could be heavy at times. Low around 23. East wind 13 to 15 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 5 to 9 inches possible.

    Low: 23 °F

    Heavy Snow
    then Wintry
    Mix

  • Monday

    Monday: Rain, snow, and sleet before 11am, then rain likely between 11am and 1pm, then snow likely after 1pm. High near 37. Northeast wind 10 to 13 mph becoming north in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than one inch possible.

    High: 37 °F

    Wintry Mix

  • Monday Night

    Monday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 13. West wind 10 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 13 °F

    Snow Likely

  • Tuesday

    Tuesday: A chance of snow before 8am. Mostly sunny, with a high near 24. West wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 24 °F

    Chance Snow
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13. West wind around 10 mph, with gusts as high as 23 mph.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 7. Wind chill values as low as -7. Northwest wind around 14 mph, with gusts as high as 30 mph.
Saturday
Partly sunny, with a high near 17. Wind chill values as low as -9. Northwest wind 8 to 13 mph, with gusts as high as 28 mph.
Saturday Night
Mostly cloudy, with a low around 12. Northwest wind around 6 mph.
Sunday
Snow, mainly after 11am. The snow could be heavy at times. High near 32. North wind 5 to 8 mph becoming east in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Sunday Night
Snow before 2am, then rain and sleet between 2am and 3am, then rain, snow, and sleet after 3am. The snow could be heavy at times. Low around 23. East wind 13 to 15 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 5 to 9 inches possible.
Monday
Rain, snow, and sleet before 11am, then rain likely between 11am and 1pm, then snow likely after 1pm. High near 37. Northeast wind 10 to 13 mph becoming north in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than one inch possible.
Monday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 13. West wind 10 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tuesday
A chance of snow before 8am. Mostly sunny, with a high near 24. West wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 13. West wind around 10 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 24. West wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 12. West wind around 7 mph.
Thursday
Partly sunny, with a high near 25. Northwest wind 6 to 9 mph, with gusts as high as 20 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14. Northwest wind 8 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 26. Northwest wind around 11 mph, with gusts as high as 23 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
12:56 pm EST Jan 23, 2026
Forecast Valid:
9pm EST Jan 23, 2026-6pm EST Jan 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation